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chicalab.bsky.social
Our research group at the University of Ottawa specializes in protein engineering and computational protein design. mysite.science.uottawa.ca/rchica/
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How do mutations far from an enzyme's active site influence catalysis? 🤔 Part 2: In collaboration with @fraserlab.bsky.social and @silviaosuna.bsky.social, we investigated this question using de novo Kemp eliminases, revealing effects of distal mutations on the catalytic cycle. 🧵 (1/6)

Whereas beneficial active site mutations to enzymes often improve the chemical transformation itself by preorganizing the active site, mutations to second-shell residues instead tune steps like product release by modifying the broader conformational ensemble www.biorxiv.org/content/10.1...

How do distal mutations contribute to enzyme catalysis? Our new study, in collaboration with @thompson-lab.bsky.social, Marc Garcia-Borràs, and @ferranfeixas.bsky.social, reveals how they optimize structural dynamics & local electric fields to drive the catalytic cycle. 🧵👇

Join us this summer for 3.5 days for science! The Protein Society's 39th Annual Symposium takes place June 26 - 29, in beautiful San Francisco. #proteinscience #annualsymposium #proteinsociety mailchi.mp/proteinsocie...

Thrilled to take a break from doom and gloom to share our latest work collaborating with the DeGrado lab! We took a de novo designed protein, screened it for ligand binding using X-rays, and used the hits to evolve two wildly different functions: fluorescent turn-on and Kemp elimination catalysis. 🧵

Customizing the Structure of a Minimal TIM Barrel to Craft a De Novo Enzyme https://www.biorxiv.org/content/10.1101/2025.01.28.635154v1

Distal mutations in a designed retro-aldolase alter loop dynamics to shift and accelerate the rate-limiting step https://www.biorxiv.org/content/10.1101/2025.01.26.634918v1

Bluetorial-A dream and a bit of a nightmare Serving as Editor-in-Chief at Science was fascinating. I greatly enjoyed working with talented and committed editorial, news, graphics, and production staff. But the inside look into scientific publishing and AAAS was also deeply disillusioning.

Looking forward to The Protein Society's 39th Annual Symposium! Honored to co-chair the program planning committee with Margie Sunde, alongside committee stars @clvizcarra.bsky.social and Gary Zhang. Explore the program here: www.proteinsociety.org/program

Mireia Solà Colom gave an incredible seminar at @bpdmc.bsky.social last week, and I'm very excited for her to share some details about what we've built at @aiproteins.bsky.social and how well our #miniproteins perform as therapeutics

There is no "committee on science" that will impose a new order or set of incentives. No one is going to "fix" peer review or incentivize it differently in one fell swoop. We have to BE the change - the tools already exist for everyone at every level to make an impact and change the incentives

📣 Save the dates 📅 We are organizing a Benzon Symposium on "Protein structure prediction and design" with what I think is an amazing set of speakers Meeting will take place in Copenhagen 🇩🇰 on Sept. 1–4, 2025, and abstract submission will open in March (benzon-foundation.dk/benzon-sympo...)

Many industrially-important reactions (e.g. lipase-catalyzed biofuel production) involve substrates poorly soluble in water. How can we screen enzymes for these reactions? Samuel Thompson invented a new 'triple emulsion' platform for biphasic screening (1/n): onlinelibrary.wiley.com/doi/full/10....

Please share this PhD opportunity in my new lab in Bristol, using protein design/ engineering to understand and build molecular motors to control intracellular transport. Working with @markdodding.bsky.social and Prof Dek Woolfson. www.findaphd.com/phds/project... www.swbio.ac.uk/biomolecular...

🚨Announcing NetSci: a super fast tool to compute correlated motion in biomolecules pubs.acs.org/doi/10.1021/... @pabloarantes.bsky.social & team also made it into a Colab notebook: colab.research.google.com/drive/1GGJKr... Give it a try & send feedback!

Happy to announce our latest article on #enzymedesign, in collaboration with Mike Thompson's group! Check it out in JACS: Design of Efficient Artificial Enzymes Using Crystallographically Enhanced Conformational Sampling pubs.acs.org/doi/full/10....

go.bsky.app/BoXpqQp Computational protein design starter pack. Let me know if I missed you!

Happy to announce our latest article on #enzymedesign, in collaboration with Mike Thompson's group! Check it out in JACS: Design of Efficient Artificial Enzymes Using Crystallographically Enhanced Conformational Sampling pubs.acs.org/doi/full/10....

Protein Engineering Canada Conference. 1 week left to benefit from early-bird discount on registration! event.fourwaves.com/pec2024/pages

Registration for PEC2024 is now open! Come join us this summer in Toronto! event.fourwaves.com/pec2024/pages

Save the date! The 5th Protein Engineering Canada Conference will take place at the University of Toronto on June 26-28, 2024. event.fourwaves.com/pec2024

2️⃣ Maud Leonora Menten 🇨🇦 (1879-1960) #womeninSTEM Canadian biochemist, known for her work in enzymology. With Michaelis, she developed an equation that explain the rate of reversible enzymatic reactions & substrate concentration, the Michaelis-Menten equation definingmomentscanada.ca/insulin100/s...

Save the date! The 5th Protein Engineering Canada Conference will take place at the University of Toronto on June 26-28, 2024. For more info: event.fourwaves.com/pec2024

“Design of efficient artificial enzymes using crystallographically-enhanced conformational sampling” 🧪🧶🧬 Engineering a Kemp eliminase w/ 250-fold increase in enzymatic activity using an experimental structural ensemble and molecular dynamics-based filtering www.biorxiv.org/content/10.1...

Happy to share our latest preprint, in collaboration with Mike Thompson's group (UC Merced). Design of efficient artificial enzymes using crystallographically-enhanced conformational sampling www.biorxiv.org/content/10.1...

Happy to announce our latest article! Here, we report a computational method for rationally tuning enzyme conformational landscapes to tailor catalytic function. In collaboration with Mike Thompson (UC Merced) and Natalie Goto (U. Ottawa). www.nature.com/articles/s41...